Bump mini-css-extract-plugin from 2.4.2 to 2.4.3 in /assets (#307)

Author: dependabot[bot]

assets/package-lock.json

@@ -28,7 +28,7 @@
     "eslint": "^7.32.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^3.4.1",
-    "mini-css-extract-plugin": "^2.4.2",
+    "mini-css-extract-plugin": "^2.4.3",
     "npm-run-all": "^4.1.5",
     "postcss-import": "^14.0.2",
     "postcss-loader": "^6.1.1",